I am in the market for an exhaust for my 400ex. I narrowed it down to the WB E-Series or the Supertrapp IDS2. I have been researching them for some time now and had only heard good things about them. But what I need to know is what gives the most HP and torque, and also how much louder the WB is compared to the Supertrapp. If anyone has any dyno numbers of both of them or db sound levels of both, could you please post?

Thanks for you help!

 

The WB pro-meg system probably will put out the most power. In a shootout on the web they did a test between fmf, big gun, and I think supertrapp, and the WB pipe was the best, because it flows the best. I have heard one before and they are pretty loud, but not compared to most. I am in the market for a better pipe myself, the big gun is not cutting it, maybe a full race pipe like LRD or Curtis sparks, huge horsepower gains from there pipes.

 

Which one will put out more power the Ids 2 quiet series or the e-series universal muffler??